Trying to install Oracle Instant Client 11.2 on Windows XP wtih PHP 5.2.1. I have the client installed successfully (I think!) on c:/Oracle/instantclient_11_2 as prescribed. When I attempt to uncomment the oracle extension in the php.ini (extension=php_oci8.dll), I'm not able to restart the services, it crashes. Nothing noted in the Apache error log other than showing an unclean shutdown. the php.ini file that is recognized by phpinfo is in c:/wamp/bin/apache/Apache2.2.11/bin/php.ini. I also see a php.ini in the php folder at c:/wamp/bin/php/php5.2.11/php.ini but that's not listed on phpinfo.